IAS doesn't really exist there is just heavy weapons and normal weapons and arguably quickdraw, although quickdraw is pretty uncommon, generally better off with flat strength/. The other thing to watch out for is the damage changes for weapons based on how much strength the user has.
Here's an example of some weapons with obscenely high damage thanks to the amount of strength i'm using: https://forums.d2jsp.org/user.php?c=3&i=193561&p=29506

To understand damage you'd probably need to read this:
https://forums.d2jsp.org/topic.php?t=91874826&f=74
The TLDR version is each tier of weapon is about 20ee better than the last one. (each tier is 5 levels above the previous)

So lets say you're using a 90ee level 20 weapon, to get more damage you'd want a minimum of 90ee at level 25 or 70ee at level 30.

As you are using a barb, you should consider buying some strength charms as these will also increase your damage. Charms with ee will make the charms damage/healing increase, seeing the barb only has 5 intel, this is something to avoid as it doesnt help you whatsoever as you shouldnt be casting.
In terms of armor, ee will have higher defense, strength will give you more damage. both are usable. Again for EE armors you should look to swap quite often, a 50ee level 20 armor would have significantly more defense than your current level 5 armor with 77ee

That's pretty much it though.

Replace weapons every 10 levels or so.
get strength charms.
get ee or strength armors.

Is there a way to respect character stats?

Thank you for the information.

ah, that's a lot of dex statted. This is slightly useful on swords and just as good as strength on axes, however going full strength is generally best as clubs will be by far the cheapest weapons available for a barb.
The only way to respec would be to reroll and restart from level 1.
getting back to level 20 wont be too bad now you have a better understanding of what you're doing.

Or you can keep going and just not put any more stats there, shouldnt be too bad. I'd recommend the reroll personally. Level 55+ will get very difficult and having more strength/vitality will be extremely helpful.
Note that putting points into vitality will give you health equal to your current level and +1 life each level up. so having 100 vitality at level 49 gives 5k health, whilst 60 vitality would only be 3k health.

I'd recommend aiming to have 100 vitality by level 50

ok great. thank you for the help.